Spiazzo is a comune (municipality) in Trentino in the northern Italian region Trentino-Alto Adige/Südtirol, located about 30 kilometres (19 mi) west of Trento. As of 31 December 2004, it had a population of 1,164 and an area of 70.6 square kilometres (27.3 sq mi).

Spiazzo borders the following municipalities: Ponte di Legno, Vermiglio, Giustino, Strembo, Saviore dell'Adamello, Caderzone, Massimeno , Daone , Bocenago , Pelugo and Montagne.